For anyone wondering, this was supposed to be the release where Apple could scan your photos for child abuse. This was delayed for this release: https://www.techradar.com/news/apple-delays-child-abuse-phot...
I mean 15.X - 15.Y will likely occur automatically while the phone is connected to WiFi and charging.. but 14 to 15 should require user approval, meaning we should be safe as long as we never upgrade >14..?